Conquering the rulers of other nations is spoken of as if it were trampling them under foot. AT: "he will conquer the rulers" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Yahweh compares the way in which this person will trample the other rulers with the way that a potter tramples on clay to mix it with water. (See: [[rc://en/ta/man/translate/figs-simile]])
Yahweh uses these rhetorical questions to mock the idols that the people worship. The implied answers are 1) that the idols have not done these things and 2) that Yahweh is the one who has done these things. AT: "None of the idols announced this from the beginning, that we might know. And none of them announced this before time, that we may say, 'He is right.'" (See: [[rc://en/ta/man/translate/figs-rquestion]] and[[rc://en/ta/man/translate/figs-ellipsis]])